Before 15 Dec 1376 [his father] Stephen Scrope 2nd Baron Scrope of Masham (age 31) and [his mother] Margery Welles Baroness Scrope Masham (age 26) were married. She by marriage Baroness Scrope of Masham. They were third cousin once removed.

Around 17 Aug 1390 John Devereux 2nd Baron Devereux (age 12) and [his future wife] Phillipe Bryan Baroness Scrope Masham Baroness Devereux were married. She by marriage Baroness Devereux. They were fourth cousins. He a great x 5 grandson of King John of England.

On 04 Nov 1393 Edmund of Langley 1st Duke of York (age 52) and [his future wife] Joan Holland Duchess York (age 13) were married. She by marriage Duchess York. The difference in their ages was 38 years. She the daughter of Thomas Holland 2nd Earl Kent (age 43) and [his future mother-in-law] Alice Fitzalan Countess Kent (age 43). He the son of King Edward III of England and Philippa of Hainault Queen Consort England. They were half second cousin once removed. She a great x 2 granddaughter of King Edward I of England.

Before 11 Jul 1398 Henry Scrope 3rd Baron Scrope of Masham (age 25) and Phillipe Bryan Baroness Scrope Masham Baroness Devereux were married. She by marriage Baroness Scrope of Masham. They were third cousin once removed.

Before 09 Aug 1404 William Willoughby 5th Baron Willoughby (age 34) and [his future wife] Joan Holland Duchess York (age 24) were married. She by marriage Baroness Willoughby de Eresby. She the daughter of Thomas Holland 2nd Earl Kent and [his future mother-in-law] Alice Fitzalan Countess Kent (age 54). She a great x 2 granddaughter of King Edward I of England.

After 06 Sep 1410 Henry Scrope 3rd Baron Scrope of Masham (age 37) and Joan Holland Duchess York (age 30) were married. She by marriage Baroness Scrope of Masham. She the daughter of Thomas Holland 2nd Earl Kent and Alice Fitzalan Countess Kent (age 60). She a great x 2 granddaughter of King Edward I of England.

In Nov 1411 Thomas Lancaster 1st Duke of Clarence (age 23) and [his sister-in-law] Margaret Holland Duchess Clarence (age 26) were married. She the daughter of Thomas Holland 2nd Earl Kent and [his mother-in-law] Alice Fitzalan Countess Kent (age 61). He the son of King Henry IV of England (age 44) and Mary Bohun. They were first cousin once removed. She a great x 2 granddaughter of King Edward I of England.

Before 27 Apr 1416 Henry Bromflete 1st Baron Vesci (age 9) and [his former wife] Joan Holland Duchess York (age 36) were married. There appears to be a twenty-seven year age gap here which may suggest the marriage ewas a reward to him since she, having being married three times before, including to Edmund of Langley 1st Duke of York, would be a wealthy widow. The difference in their ages was 26 years; she, unusually, being older than him. She the daughter of Thomas Holland 2nd Earl Kent and [his former mother-in-law] Alice Fitzalan Countess Kent (deceased). She a great x 2 granddaughter of King Edward I of England.